Fig 1. Modified CONSORT [32] flow diagram.

1,118 incarcerated people scheduled to be released within 6 months were screened for opioid use disorder, and 125 screened positive and consented to participate in the study. Of those, 109 completed the full pre-release visit questionnaire, 63 followed up 1 month post release, 57 followed up at 3 months, and 55 followed up at 6 months. Note that some participants did not complete one follow-up visit but returned later in the study; for example, not all of the 55 participants who completed 6-month follow-up had also completed the 3-month follow-up.